98 Annals of the Carnegie Museum. 



Genus Leptoreodon Wortman. 



Bull. Amer. Mus. Nat. Hist., Vol. X, 1898, p. 94. 



This genus is represented in the collection of the Carnegie Museum 

 by a number of fragmentary specimens, which are not sufficiently 

 complete to add anything of importance to what we know from the 

 studies of Dr. Wortmann and Professor Scott. 



28. Leptoreodon marshi Wortman. 



Bull. Amer. Mus. Nat. Hist., Vol. X, 1898, p. 98. 



From a recent reexamination of the type of Leptoreodon marshi 

 in the American Museum it appears that the crescents of the molars 

 were quite high in an unworn state, and that the anterior intermediate 

 tubercle was probably not present, as Dr. Wortman was inclined to 

 believe. ^^ The type specimen should be further cleared from its 

 matrix and good crown-views published of the upper and lower 

 dentition. 



With regard to the genus Camelomeryx proposed by Prof. Scott, 

 I feel that it is so nearly like Leptoreodon, that, until more material 

 is obtained, I should hesitate to separate them generically. 



Genus Oromeryx Marsh. 

 Amer. Jour. Sci., Vol. XLVHI, 1894, p. 269. 



29. Oromeryx sp. 



To Oromeryx is provisionally referred an immature specimen, 

 C. M. No. 3027, found in horizon C, six miles east of Myton, Utah. 

 The specimen consists of a number of mutilated fragments representing 

 various parts of the skeleton. The most important of these is a 

 maxillary, which contains three deciduous and two permanent teeth. 

 The deciduous teeth do not possess any characters of diagnostic value, 

 but the permanent molars have that curious broadness of the anterior 

 inner crescents and the sudden transverse reduction of the posterior 

 inner crescent seen in Professor Marsh's illustration and mentioned 

 by Professor Scott.*" The internal cingulum is weak, but has the 

 mammillary structure seen in the type of Oromeryx. The t\-pe of 

 Oromeryx plicatns, which has recently been examined, consists of right 

 and left upper teeth; those of the right side are all broken externally 

 except P-. The specimen pertains to an animal fully adult; but shows 



5' Prof. Scott ascertained from unworn specimens that the anterior intermediate 

 cusp of the upper molars is not present. 



60 Trans. Wagner Free Institute of Scietice, Vol. VI, 1899, p. 83. 



